Copyright 2026 Axius SDC, Inc.

Licensed under the Apache License, Version 2.0.

src/sdc_mapper/schemas/sdc4.xsd is the SDC4 reference model schema from the Semantic Data Charter's SDCRM repository
(https://github.com/SemanticDataCharter/SDCRM, Apache 2.0), identical to the copy published at
https://semanticdatacharter.com/ns/sdc4/sdc4.xsd; it is shipped so validation never fetches it.

The test fixture under samples/halvorsen-credit-note/ is the published package of the Credit Note model of the
business documents library and one Credit Note record generated by HalvorsenDemo
(https://github.com/SemanticDataCharter/HalvorsenDemo, Apache 2.0), whose companies and documents are fictitious.
